SIPROTEC 6MD85

The SIPROTEC 6MD85 modular bay controller is designed for medium voltage and high to extra-high voltage switchgear and provides integrated operation and extensive protection functions. Coupled with DIGSI 5, it delivers powerful automation using simple configuration.

Its modular structure and flexibility allow the SIPROTEC 5 7UM85 to offer future-oriented solutions for protection, control, automation, monitoring, and Power Quality (PQ) basic.

Basic Features

  • Integrated bay controller with versatile protection function from medium to extra-high voltage
  • Provides control of switching devices
  • Synchrocheck and switchgear interlocking protection
  • Up to 4 pluggable communication modules, usable for different and redundant protocols (IEC 61850-8-1, IEC 61850-9-2 Client, IEC 60870-5-103, IEC 60870-5-104, Modbus TCP, DNP3 serial and TCP, PROFINET I/O, and PROFINET I/O S2 redundancy)
  • Reliable data transmission via PRP and HSR redundancy protocols
  • Arc protection
  • Extensive cybersecurity functionality (e.g. as role-based access control (RBAC), protocolling security-related events, signed firmware or authenticated network access IEEE 802.1X)
  • Provides simple, quick and secure access to the device data via a standard Web browser to display all information, diagnostic data, vector diagrams, single-line diagrams, and device display pages
  • Optional overcurrent protection for all voltage levels with 3-pole tripping
  • Also used in switchgear with breaker-and-a-half configuration
  • Overcurrent protection also configurable as emergency function
  • Selective protection of overhead lines and cables with single-ended and multi-ended feeders using protection communication
  • Captures operational measured variables and protection function measured values for the evaluation of the systems to support commissioning and analyze faults
  • Phasor Measurement Unit (PMU) for synchrophasor measured values and IEEE C37.118 protocol integrated
  • Enables powerful fault recording (buffer for a max. record time of 80 sec. at 8 kHz or 320 sec. at 2 kHz)
  • Point-on-Wave Switching (PoW)
  • Flexible adjustment of I/O quantity structure within the scope of the SIPROTEC 5 modular system